The LGBT Health & Development Program

Tag: orientation

Dr. Meredith Chivers: Changing Sexual Orientation

Posted by rachel in IMPACT Video, Youth Video. No Comments

27th December

Dr. Chivers says that it is not possible for people to change their sexual orientation, but what can and should be changed is society’s response to people’s sexual orientation.

Dr. Meredith Chivers: What is Sexual Orientation?

9th July

Dr. Chivers says that everybody has a sexual orientation and sexual drive that we don’t consciously think about.

Dr. Meredith Chivers: What is Bisexuality?

Posted by rachel in IMPACT Video. No Comments

9th July

Dr. Chivers says that men’s sexual orientation tends to be more polarized than that of women, but this doesn’t mean that all women are bisexual.

A candidate gene study of CYP19 (aromatase) and male sexual orientation.

3rd February

Aromatase cytochrome P450 (CYP19), which is necessary for the conversion of androgens to estrogens, plays an important role in the sexual differentiation of the brain. To investigate whether differences in the gene encoding the aromatase enzyme influence sexual orientation in men, we conducted linkage, association, and expression analyses in a large sample of homosexual brothers using microsatellite markers in and around CYP19. No linkage was detected, and a gene-specific relative risk of 1.5-fold could be excluded at a lod score of -2. Results of the TDT demonstrated no preferential transmission of any of the CYP19 alleles in this sample. Expression of aromatase mRNA by microarray analysis was not significantly different between heterosexual and homosexual men. These results suggest that variation in the gene for this subunit of the aromatase enzyme complex is not likely to be a major factor in … Read More »

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